ST7528 Datasheet, PDF (1/97 Pages) Sitronix Technology Co., Ltd. – 16 Gray Scale Dot Matrix LCD Controller/Driver

ST
Sitronix
ST7528
INTRODUCTION
16 Gray Scale Dot Matrix LCD Controller/Driver
The ST7528 is a driver & controller LSI for 16-level gray scale graphic dot-matrix liquid crystal display systems. It contains
2 Mode (160X100,132X128) for Segment and Common driver circuits. This chip is connected directly to a microprocessor,
accepts Serial Peripheral Interface (SPI), IIC or 8-bit parallel display data and stores in an on-chip display data RAM of 160
x 129 x 4 bits. It performs display data RAM read/write operation with no external operating clock to minimize power
consumption. In addition, because it contains power supply circuits necessary to drive liquid crystal, it is possible to make a
display system with the fewest components.
FEATURES
16-level (White Mode ~ Dark Mode) Gray Scale Display with PWM and FRC Methods
DDRAM data [ 4n : 4n+3 ]
4n
4n + 1 4n + 2 4n+ 3
Gray Scale
0
0
0
0
White Mode
0
0
0
1
Gray Level 1
0
0
1
0
Gray Level 2
:
:
:
:
:
:
:
:
:
:
1
1
0
1
Gray Level 13
1
1
1
0
Gray Level 14
1
1
1
1
Dark
(Mode0: Accessible column address, n = 0, 1, 2, ……, 129, 130, 131)
(Mode1: Accessible column address, n = 0, 1, 2, ……, 157, 158, 159)
Driver Output Circuits
−Mode 0 : 132 segment outputs / 128+1 common outputs (16-level gray scale)
−Mode 1: 160 segment outputs / 100+1 common outputs (16-level gray scale)
Applicable Display Ratios
− Various partial display
− Partial window moving & data scrolling
On-chip Display Data RAM
− Capacity: 129 × 160 × 4 = 82,560 bits
−16-Gray Level display dot is illuminated by 4 bit data control
Ver2.3
1/97
2007/1/3